DS18B20 Digital Temperature Sensor + Extras

1-Wire digital temperature sensor with ±0.5°C accuracy and up to 12-bit resolution, usable at 3.0–5.0 V. Multiple sensors can share one data pin via unique 64-bit IDs. Includes a required 4.7 kΩ pull-up resistor; needs a 1-Wire library.

Logical pinout · physical placement not verified

GNDTO-92 pin 1, left lead when viewing flat face with leads downward
Ground lead, DS18B20 TO-92 pin 1. Product page identifies the sold item as DS18B20; package pin order is from the DS18B20 datasheet, source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
Type · GroundVoltage · 0V
DQDATATO-92 pin 2, centre lead when viewing flat face with leads downward
1-Wire data lead, DS18B20 TO-92 pin 2. Adafruit product page states the sensor uses one digital pin and needs a 4.7k pullup from DATA to VCC; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf; usage source: https://www.adafruit.com/product/374
Type · SignalVoltage · 3.0V to 5.5V power/data range per Adafruit product page
VDDTO-92 pin 3, right lead when viewing flat face with leads downward
Supply lead, DS18B20 TO-92 pin 3. Adafruit product page states usable with 3.0V to 5.5V power/data; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
Type · PowerVoltage · 3.0V to 5.5V

Pin	Position	Type	Function	Voltage
GND	TO-92 pin 1, left lead when viewing flat face with leads downward	Ground	Ground lead, DS18B20 TO-92 pin 1. Product page identifies the sold item as DS18B20; package pin order is from the DS18B20 datasheet, source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf	0V
DQDATA	TO-92 pin 2, centre lead when viewing flat face with leads downward	Signal	1-Wire data lead, DS18B20 TO-92 pin 2. Adafruit product page states the sensor uses one digital pin and needs a 4.7k pullup from DATA to VCC; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf; usage source: https://www.adafruit.com/product/374	3.0V to 5.5V power/data range per Adafruit product page
VDD	TO-92 pin 3, right lead when viewing flat face with leads downward	Power	Supply lead, DS18B20 TO-92 pin 3. Adafruit product page states usable with 3.0V to 5.5V power/data; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf	3.0V to 5.5V

Logical pinout · physical placement not verified

Pin details

3 connections

GND
Ground lead, DS18B20 TO-92 pin 1. Product page identifies the sold item as DS18B20; package pin order is from the DS18B20 datasheet, source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
GroundVoltage · 0V
TO-92 pin 1, left lead when viewing flat face with leads downward
DQDATA
1-Wire data lead, DS18B20 TO-92 pin 2. Adafruit product page states the sensor uses one digital pin and needs a 4.7k pullup from DATA to VCC; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf; usage source: https://www.adafruit.com/product/374
SignalVoltage · 3.0V to 5.5V power/data range per Adafruit product page
TO-92 pin 2, centre lead when viewing flat face with leads downward
VDD
Supply lead, DS18B20 TO-92 pin 3. Adafruit product page states usable with 3.0V to 5.5V power/data; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
PowerVoltage · 3.0V to 5.5V
TO-92 pin 3, right lead when viewing flat face with leads downward

Start wiring

I2C · SPI · Single data line · 3.3 – 5 V · Breakout

Verify supply voltage and logic levels before powering up.

Module pins: VDD, GND. Schematik maps them to your board in the app.

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